青钱柳茶的化学成分、农残及挥发性成分分析
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(南京林业大学轻工科学与工程学院,江苏 南京 210037)

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李婷婷(1982-),女,南京林业大学讲师,博士。E-mail: litingting82@163.com

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国家级大学生实践创新训练计划项目(编号:201310298004Z);江苏高校优势学科建设工程资助项目


Analysis of chemical and volatile components of Cyclocarya paliurus tea
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(College of Light Industry Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China)

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    摘要:

    为综合评价青钱柳茶的质量,对青钱柳茶的主要化学成分、农药残留和挥发性成分进行全面分析。利用顶空固相微萃取(HS—SPME)方法对青钱柳茶的挥发性成分提取后,采用气相色谱—质谱联用(GC—MS)技术对其成分进行分析。结果表明:青钱柳茶中的总黄酮、总多糖、总三萜含量分别为0.73%,2.53%,0.88%。青钱柳茶的农药残留中有23项处于检出限以下未能检出。重金属铅、砷、汞的含量分别为2.27,0.38,0.058 mg/kg,均符合中国GB 2673—2012标准要求。在青钱柳茶中共检测出30种挥发性成分,主要以呈现青香、花香、果香和木香的香气成分居多,其中含量最高的两种物质分别为苯甲醇(13.50%)和2-甲基-2-丁烯醛(13.10%)。

    Abstract:

    To evaluate the quality of Cyclocarya paliurus (Batal) Ijinskaja tea, main chemical compounds, agricultural chemicals residues, and aroma compounds of Cyclocarya paliurus tea were analyzed. The aroma compounds of Cyclocarya paliurus tea were extracted by headspace solid-phase microextraction (HS—SPME), and analyzed by gas chromatography-mass spectrometry (GC—MS). The results showed that the contents of total flavonoids, polysaccharide, triterpene saponinsin of Cyclocarya paliurus tea were 0.73%, 2.53% and 0.88%, respectively. As for pesticide residues in Cyclocarya paliurus tea, 23 kinds of pesticide residues are below the limit of detection. The content of lead, arsenic, and mercury in Cyclocarya paliurus tea were 2.27, 0.38, 0.058 mg/kg respectively, which all meet the requirements of the State standards. Thirty kinds of aromatic compounds of were identified from Cyclocarya paliurus tea, which contribute to a complex green grass, floral, fruity and woody scent. The highest content components was benzyl alcohol (13.50%), the second was 2- methyl-2-butene aldehyde (13.10%).

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李婷婷,石叶蓉,吴彩娥,等.青钱柳茶的化学成分、农残及挥发性成分分析[J].食品与机械,2015,31(4):10-13.
LITingting, SHIYerong, WUCaie, et al. Analysis of chemical and volatile components of Cyclocarya paliurus tea[J]. Food & Machinery,2015,31(4):10-13.

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  • 收稿日期:2015-01-31
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  • 在线发布日期: 2023-03-30
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